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LOCATION--Lat 42o11'20", long 71o45'56", Worcester County, Hydrologic Unit 01090003, on right bank, instrument shelter on Elm Court, approximately 20 ft downstream from W. Main Street bridge, stage sensor approximately 50 ft upstream from W. Main Street bridge, at Millbury, MA.
DRAINAGE AREA--71.4 mi2.
PERIOD OF RECORD--July 2002 to current year.
GAGE--Data Collection Platform with satellite telemeter.
REMARKS--Flows affected by effluent releases from Upper Blackstone Waste-Water Treatment Plant located approximately 2.5 mi upstream from gage. High flows may include diversion flood flows through Kettle Brook diversion system with mouth located approximately 2.0 mi upstream from gage.
COOPERATION--Upper Blackstone Water Pollution Abatement District

ICE EFFECTS ON STREAMFLOW During winter, ice formation in streams can cause stage and corresponding discharge values to appear higher than expected during periods of no precipitation. Ice effects from partial ice cover or shore ice may be minor, where stage and discharge appear to increase at night and decrease to base-line conditions around midday for one or more days. Major ice effects from complete ice cover appear as constantly increasing stage and discharge over several days during prolonged cold periods. Stage and discharge values for streams experiencing minor ice effects will continue to be displayed on the web to enable the user to estimate the approximate base-line discharges. Note that this method of estimation should only be used when no runoff occurs. During periods of major ice effects, display of discharge data on the web will be temporarily discontinued to prevent misuse of erroneous discharge data. The discharge record will resume when it is determined that ice conditions are no longer present. Display of stage data during periods of minor and major ice effects will continue to be displayed on the web. Daily mean discharges will be estimated for all periods of ice-effected discharges.

Photo of Blackstone River gage shelter at Millbury
Photo of Blackstone River control section under W. Main Street bridge
Photo of stage sensor and mounting block
Boating safety tips
This station managed by the Northborough, MA Field Office.

Available Parameters Available Period
All 2 Available Parameters for this site
00060 Discharge 2007-10-01  2014-12-20
00065 Gage height 2007-10-01  2014-12-20

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Instantaneous-data availability statement

Discharge, cubic feet per second

Most recent instantaneous value: 228   12-20-2014  06:00 EST
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Daily discharge, cubic feet per second -- statistics for Dec 20 based on 12 years of record more
Median Mean Most Recent
Value Dec 20
66 119 171 199 228 272 509

Gage height, feet

Most recent instantaneous value: 2.49   12-20-2014  06:00 EST
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